I have to agree with that. It seems quite unfair that while not a single letter of RP has to be provided for building, upgrading, maintaining and using said POB, but players that simply attack this POB (maybe even because it is their job? See law enforcement) have to provide this RP and it is now even easier for the base owners to see this warning.
So please, you should rather force roleplay onto base owners. Because as it is now, their construction can be ooRP, the maintenance can be ooRP, operating it can be ooRP. The base owners could care less about RP. While it is forced on the attackers.
Furthermore, do not force the forums on the attackers either. I think having plenty of ingame conversations with the owners or suppliers, telling them why their base has to be destroyed (illegal construction etc), that should be sufficient.
Plus the thread you made will soon be spammed to death by tons of indies, I assume.